/Engine/Plugins/Experimental/ImagePlate/Source/ImagePlate/Public/ImagePlateFileSequence.h
Request a frame of data from the cache, whilst also caching leading and trailing frames if necessary
[TSharedFuture](API\Runtime\Core\Async\TSharedFuture)< [FImagePlateSourceFrame](API\Plugins\ImagePlate\FImagePlateSourceFrame) > RequestFrame ( float Time, int32 LeadingPrecacheFrames, int32 TrailingPrecacheFrames )